I melted 2 bars of white chocolate, poured it onto parchment paper and added some drops of melted red and blue chocolate. You can make it yourself by adding oil based food coloring to white chocolate but it might be easier to buy colored chocolate flakes (I bought mine in a cooking shop). Use a knife to create a swirl and decorate the chocolate with blue and red m&m’s. Set to cool in the freezer for at least one hour. Break it in chunks to make sure that everyone can have a piece.